Outpost Optimizing Science & Exploration Working Group (OSEWG) - Lunar Surface Science Scenarios

Transcription

1 National Aeronautics and Space Administration Outpost Optimizing Science & Exploration Working Group (OSEWG) - Lunar Surface Science Scenarios Planetary Science Subcommittee October 2, 2008 Gordon Johnston, OSEWG Co-Chair, SMD Laurie Leshin, OSEWG Surface Science Scenarios Working Group Co-Chair

2 Outline OSEWG Scope, Strategy, and Momentum Exploration Architecture Overview Ares V and Altair - - concept development, point of departure Lunar Surface Systems concept development LRO/LCROSS - Lunar Mapping, Modeling, and Data Integration Lunar Surface Science Scenarios 2

3 Optimizing Science & Exploration Working Group - Chartered to Achieve OSEWG chartered by ESMD and SMD in FY2007; updated in FY2008. OSEWG leadership reports to ESMD and SMD Deputy AAs Scope: Coordinate and guide science and exploration planning Identify and provide science objectives (in requirements terms) for consideration of inclusion into the development of the Constellation architecture. Includes all science Scope includes not only the outpost, but also sortie, orbiters Science objectives input provided by NAC, NRC SCEM, LEAG Engage the science and exploration communities (includes LEAG, CAPTEM, MEPAG, and other fora) Serve as liaison to LEAG for SMD and ESMD (through PSS, if/as needed) Remain cognizant of related activities (e.g., NASA Partnership Integration Committee, SMD Lunar Program, LEAG, ILEWG) 3

4 OSEWG Strategy & Momentum OSEWG Strategy: 1. Focus on optimizing science and exploration objectives through collaboration on surface science scenarios (SSS). OSEWG SSS Working Group (SSSWG) 2. Focus ESMD-SMD coordination and communications in 3 areas: 1. Analogue Missions 2. Science Objectives 3. Lunar Data Integration 3. Engage industry & academia for input, peer review and participation in planning, prioritizing and development of products. Momentum: August 20, 2008: EARD modified to include an return mass objective of 250kg; the threshold requirement remains 100kg Oct 1, 2008: Funding 6 FTE to help implement OSEWG leadership strategy Organizing and aligning science objectives, studies, etc., with action plans OSEWG website being developed for access by external communities (via LPI) ESMD and OSEWG initiated more direct engagement of the lunar science community through the LEAG, LPI and NLSI 4

5 OSEWG Coordinates Science Requirements for Inclusion into Constellation Architecture Crafts the Policy & Agreements PIC (ESMD AA/DAA) Policy Agreements Other Mission Directorates and Support Organizations Crafts the Architecture and Partnerships OSEWG ESMD/SMD Science Requirements Coordination ESMD coordination of external groups (DIO) Architecture Coordination Integration Requirements Commercial International Inter Agency Lunar Life Science MEPAG LEAG ILEWG With assistance from CxP etc. Crafts the Design Other Non CxP Program Implementation Schemes Other Mission Directorates, IP s, etc (CxP) CxLunar/Surface Systems Future elements that could augment US architecture Center Assigned Work DIO Directorate Integration Office, ISECG International Space Exploration Coordinating Group, IP International Partners, LEAG Lunar Exploration Advisory Group, ILEWG International Lunar Exploration Working Group, MEPAG Mars Exploration Program Advisory Group, OER Office of External Relations, OSEWG Outpost Science Exploration Working Group, PIC Partnership Integration Committee 5

6 Exploration Transportation Exploration Transportation Architecture Architecture 6

7 Architecture Driven By A Strategy Where We Have Been and Next Steps Global Exploration Strategy Development Themes and Objectives Architecture Assessment (LAT1) Dec 06 Outpost first at one of the Poles, elements critical to US Detailed Design Concepts (LAT2) Aug 07 Operations concepts, technology needs, element requirements Lunar Capabilities Concept Review June 08 Refinement of concepts in support of the transportation system Lunar surface systems concept review Surface system concepts but no final designs Lunar transportation system SRR Lunar surface systems SRR Lunar surface system element SRRs Time 7

8 Ares V Conceptual Design 122 m (400 ft) Altair Crew Overall Vehicle Height, m (ft) 91 m (300 ft) 61 m (200 ft) 30 m (100 ft) Orion Upper Stage (1 J-2X) mt (302.2K lbm) LOX/LH 2 5-Segment Reusable Solid Rocket Booster (RSRB) Earth Departure Stage (EDS) (1 J-2X) mt (557.7K lbm) LOX/LH 2 Core Stage (6 RS-68 Engines) 1,587.3 mt (3,499.5K lbm) LOX/LH Segment RSRBs Lunar Lander S-IVB (1 J-2 engine) mt (240.0K LOX/LH 2 S-II (5 J-2 engines) mt (1,000.0K lbm) LOX/LH 2 S-IC (5 F-1) 1,769.0 mt (3,900.0K lbm) LOX/RP-1 0 Space Shuttle Ares I Ares V Saturn V Height: 56.1 m (184.2 ft) Gross Liftoff Mass: 2,041.1 mt (4,500.0K lbm) Payload Capability: 25.0 mt (55.1K lbm) to Low Earth Orbit (LEO) DAC 2 TR 6 LV National Aeronautics and Space Administration Height: 99.1 m (325.0 ft) Gross Liftoff Mass: mt (2,044.0K lbm) Payload Capability: 25.5 mt (56.2K lbm) to LEO Height: m (381.1 ft) Gross Liftoff Mass: 3,704.5 mt (8,167.1K lbm) Payload Capability: 71.1 mt (156.7K lbm) to TLI (with Ares I) 62.8 mt (138.5K lbm) to Direct TLI ~187.7 mt (413.8K lbm) to LEO Height: m (364 ft) Gross Liftoff Mass: 2,948.4 mt (6,500K lbm) Payload Capability: 44.9 mt (99K kbm) to TLI mt (262K lbm) to LEO 8 8

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10 Lunar Surface System Concepts 10

11 Lunar Mapping, Modeling and Data Integration The Lunar Reconnaissance Orbiter Camera (LROC) project of LRO has developed a target planning system to solicit, prioritize, and plan on-orbit operations to acquire exploration and science targets. Science targets are being solicited from the science community by the LROC project coordinated through the LRO project science office. The LPRP Lunar Mapping and Modeling Project (LMMP) is working with Constellation to identify required characteristics of exploration targets, i.e. geometry, landing hazard assessment, slopes, lighting, etc. The LMMP is tasked to ensure that LRO data sets will be geodetically controlled and co-registered based on a control network derived from the LRO/LOLA data. Exploration-relevant data will be geodetically controlled and co-registered. SMD will geodetically control and co-register science data. All LRO data will be available in the Planetary Data System LPRP has chartered the Lunar Geodesy and Cartography Working Group Will report results and findings to the IAU/IAG Working Group on Cartographic Coordinates and Rotational Elements 11

12 National Aeronautics and Space Administration Shackleton Rim Landing Movie

13 National Aeronautics and Space Administration Surface Science Scenarios

14 OSEWG Surface Science Scenario Working Group Objectives Construct Campaign-level (multi-mission) Science Scenarios Lunar Surface Science Scenarios for single missions Design Reference Science Investigations that highlight scientific goals and objectives for examination by the appropriate teams for planning surface and orbiting lunar surface missions, campaigns, and architectures Use analysis of selected surface scenarios to drive concepts of operations and requirements for the Constellation program and appropriate projects (e.g., Altair, EVA, and Surface Systems Projects) SMD Programs (e.g., LASER, LSSO, MMAMA, ASTEP) missions (e.g., LADEE, ILN) and present requirements for incorporation into the appropriate requirements documents Use analysis of selected surface scenarios to drive planning for analog studies Engage the science and exploration communities (through LEAG, CAPTEM, and other forums) and the NAC in the discussion of surface scenarios, including responding to NAC actions with respect to surface scenarios 14

15 OSEWG Surface Science Scenario Working Group Activity Flow NAC NRC LEAG Goals & Objectives Define Investigations & Measurements Product: -Minimum Achievement Thresholds Define Metrics Develop & Assess Representative Plans & Scenarios Products: -Design Reference Payloads - DR Single Mission Scenarios -DR Multi Mission Scenarios - Operations Concepts - Trade Study Results Evaluate Product: Progress Reports OSEWG Cx LSS Candidate Requirements Science Community Input NAC, LEAG, MEPAG, NLSI 15

16 Science Surface Scenario Working Group Key Activities Work with LEAG to understand new set of Goals and Objectives Develop science scenarios for different mission types and sites! Sortie missions with Apollo-like mobility at two sites (so far) Longer traverse missions at multiple sites including pole A multi mission scenario of polar outpost + 3 sorties Develop overarching approach for metrics for evaluating likely scientific return from lunar missions and campaigns as measured against NAC lunar science objectives from Tempe Workshop, NRC SCEM Report Objectives and LEAG Translate key scenario findings into candidate science-driven requirements to consideration by OSEWG for inclusion on the CARD or EARD 16

17 Example Science Activities per Science Community Objectives Geophysical Network (-PSS-2) Build on ILN work Include field testing in Analogs plan Solar Wind measurement and flux instrumentation (-HPS-4) In-situ Electro-Magnetic and Charged-Dust Environment at a potential Outpost or other lunar site (-C-14) Astrophysics Observatories (-APS-2): Deployment and servicing capabilities Maintenance, refurbishment, and upgrade Potential to integrate with other Exploration operations Planetary Protection instrumentation such as robotic sample collection & sensitive, rapid assay methods using field-portable equipment (-PPS-2, -PPS-4) Earth observation, constant Earth-view locations (-ESS-1, -ESS-2) Instrumentation concepts and activities identified through LSSO, ILN, NRC studies, etc. 17

18 Workshop: Planning Sorties at Tsiolkovsky and Alphonsus Two groups of four scientists were tasked with Tsiolkovsky or Alphonsus craters and asked to design an exploration plan driven by scientific rationale. The exercise assumed a total of eight, two-man EVAs of eight hours, including the use of two unpressurized rovers Results reported at NLSI Lunar Science Conference in July, and final report is being written Tsiolkovsky Alphonsus 18

19 Workshop: Preliminary Recommendations Robotic mission designed as precursor and follow up is fundamental to maximize success of human mission. Hazard assessment & scientific analyses Flexible EVA plans Mass of returned samples estimated at ~300 kg for 7-day sortie mission (based on Apollo 17 sampling); requires requirement update Enable scientific investigations with field instruments: Digital handlens Spectral cameras Handheld geochemical analysis tools Ground penetrating radar Deploy network or instrument station sites e.g. Geophones, seismic sources, surface magnetometers Continued support for ongoing efforts to geo-reference uncontrolled data sets 19

20 OSEWG Surface Science Scenario Working Group NAC NRC LEAG Goals & Objectives Define Investigations & Measurements Product: -Minimum Achievement Thresholds Define Metrics Develop & Assess Representative Plans & Scenarios Products: -Design Reference Payloads - DR Single Mission Scenarios -DR Multi Mission Scenarios - Operations Concepts - Trade Study Results Evaluate Product: Progress Reports OSEWG Cx LSS Candidate Requirements Science Community Input NAC, LEAG, MEPAG, NLSI 20